Sensor Tests; Crankshaft Position Sensor (Cps) Test; Throttle Position Sensor (Tps) Test - Evinrude E-Tec 40 HP Service Manual

SENSOR TESTS

All senso r circu its a re de pendent o n wiring a nd
connections, EMM supplied current (5 V), a nd
sensor resist ance. The supplied
through the wiring circuit
returning to the EMM.
Use Evinrude Diagnostics sof t-
IMPORTANT:
ware to monitor sensor circuit voltages or values.
Crankshaft Position Sensor (CPS)
Test
Use the Evinrude Diagnostics software CPS Sync
and engine RPM displays to confirm a valid CPS
signal while the outboa rd is cranking or running.
An RPM display higher than zero indicates a CPS
signal to the EMM.
Disconnect the crankshaft position sensor.
Use a digital multimeter to measure sensor resis-
tance betwee n the yellow a nd white wires. The
complete circuit can b e tested
between pins 6 and 7 of the EMM J1-A connector.
Sensor Resistance
560 Ω ± 10% @ 77°F (25°C)
1. CPS Connector
The CPS is mount ed to the throttle body housing
and requires no adjustment. Air gap or clearance
to flywheel is fixed at approximately
current flows
and sensor be fore
by measuring
1
002286
0.073 in.
ELECTRICAL AND IGNITION
(1.85 mm). Th e accep table clearance is 0 .036 to
0.110 in. (1 to 2.8 mm).
1
1. CPS gap

Throttle Position Sensor (TPS) Test

Use Evinrude Diagnostics sof tware to monitor
TPS volt age while the ou tboard is running. Volt-
age sho uld change evenly as se nsor lever is
moved.
Remove the electrical co nnector from the throttle
position sensor.
Use a digital multimeter to measure sensor re sis-
tance.
Sensor Resistance between "A" and "B"
3000 to 7000 Ω @ 77°F (25°C)
Sensor Resistance between "A" and "C"
4000 to 8000 Ω @ 77°F (25°C)
1
1. TPS
SENSOR TESTS
006527
6
002289
95